Results 141 to 150 of about 934 (164)

Boeckella major (Copepoda: Calanoida): a predator in Australian ephemeral pools

Fundamental and Applied Limnology, 1999
La Trobe University Faculty of Science, Technology and Engineering Murray Darling Freshwater Research CentreMDFRC item.Small ephemeral pools in the Murray-Darling basin, Australia, that dry annually lack fish and are dominated by microfauna. Community size structures and species diversity are very variable and many ponds contain one or more of the ...
Green, John D., Shiel, Russell J., Littler, Ray A.   +2 more
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Redescription and distribution of Boeckella gibbosa (Brehm, 1935) (Copepoda, Calanoida, Centropagidae)

Hydrobiologia, 1997
Boeckella gibbosa considered as a doubtful species by Bayly(1992) is here redescribed and illustrated to confirm its validity.This taxon is part of a group of related species to which B. calcaris, B. palustris, B. vallentini and B. diamantina belong, being closest to B. calcaris.Diagnostic features of B.
Cecilia Locascio de Mitrovich, Silvina Menu-Marque   +1 more
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Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula

The Holocene, 2006
The origins of the freshwater fauna that inhabits Antarctic lakes are poorly known. The species present today could be relict species that have survived Quaternary glaciations on the continent, or Holocene migrants from more temperate regions. One approach to investigating these questions is to study faunal microfossils in lake sediment. This approach
John A.E. Gibson, Rolf Zale
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Contribution of rotifers to the diet and fitness of Boeckella (Copepoda: Calanoida)

Freshwater Biology, 1999
1. The calanoid copepods, Boeckella triarticulata Sars and Boeckella hamata Brehm, are major components of the freshwater zooplankton of New Zealand. It was not known whether these copepods ingest rotifers, nor whether the inclusion of rotifers in their diets might improve their fitness.
Kyleigh M. Couch, Carolyn W. Burns, John J. Gilbert   +2 more
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Temperature effects on oxygen consumption by the copepodBoeckella dilatata

New Zealand Journal of Marine and Freshwater Research, 1977
Abstract The rate of oxygen uptake by Boeckella dilatala collected from Lake Hayes was measured at four different temperatures using the micro‐Winkler technique. The rate of oxygen consumption increased with increasing temperature between 10°C and 20°c, and then declined. This is compared with the patterns shown by B. delicata, B.
J. D. Green, M. A. Chapman
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Description of the First Boeckella (Copepoda, Calanoida, Centropagidae) From New Caledonia

Crustaceana, 1998
A new species of the genus Boeckella De Guerne & Richard, 1889 is described and illustrated from New Caledonia. It is the first representative of this genus of the family Centropagidae (Copepoda, Calanoida) to be recorded from New Caledonia. Boeckella spinogibba n. sp.
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Parasitic regulation in a population of Boeckella hamata Brehm (Copepoda: Calanoida)

Freshwater Biology, 1989
SUMMARY. 1. The impact of parasitism by a fungus Aphanomyces sp. (Phycomycetes: Saprotegniaceae) on a population of Boeckella hamata in Lake Mahinerangi in New Zealand was studied over 20 months. The incidence of infection among adult female copepods exceeded 12% throughout winter (May‐October) and was highest in autumn (46%) when population birth ...
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Temporal and spatial variations of phytoplankton from Boeckella Lake (Hope Bay, Antarctic Peninsula)

SIL Proceedings, 1922-2010, 1993
The main water body at Hope Bay, Boeckella Lake, was sampled at four sites for phytoplankton during summer 1991 to assess the influence of nutrients from nearby penguin rookeries on both phytoplankton density and composition. The site located at the base of the rookeries had total phosphorus values comparable to those reported from the most eutrophic ...
I. Izaguirre, G. Mataloni, A. Vinocur, G. Tell   +3 more
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The biogeography of three Boeckella species (Copepoda: Calanoida) in New Zealand

Hydrobiologia, 1988
The New Zealand distributions of three species of Boeckella (Copepoda, Calanoida), B. triarticulata, B. dilatata and B. hamata are mapped. B. triarticulata is primarily a pond dweller but is also found in reservoirs and shallow lakes. B. dilatata is mainly found in the deeper glacial lakes and ponds in the central region of the South Island and B ...
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Intersexuality in Boeckella Triarticulata (Thomson, 1883) (Copepoda, Calanoida): a trap for unwary taxonomists

Crustaceana, 2008
Copepod systematists should be careful not to attribute taxonomic significance to teratological structures. Given that only a minute fraction of copepod populations is subjected to microscopic examination, and that several workers have encountered intersexual individuals, intersexuality is not an extremely rare phenomenon.
Bayly, I., Shiel, R.
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